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Focus, Nav: Merged bits from RangeSelect features to enable early manipulation of focus scope for styling purpose.

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FocusScopeId is tracked by nav scoring/request and stored in result.
It's all rather WIP and we should reorganize the SetNavIDXXX functions fiasco at some point (soon?).
Didn't separate FocusScope from SelectionScope for now, will re-investigate this later, this is the minimum commit to be able to do some styling.
This commit is contained in:
omar
2020-01-14 19:23:50 +01:00
parent 4f7bf7e96a
commit 2ebe08be40
3 changed files with 57 additions and 47 deletions
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51
imgui.cpp
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@ -2752,19 +2752,21 @@ void ImGui::GcAwakeTransientWindowBuffers(ImGuiWindow* window)
window->MemoryDrawListIdxCapacity = window->MemoryDrawListVtxCapacity = 0;
}
void ImGui::SetNavID(ImGuiID id, int nav_layer)
// FIXME-NAV: Refactor those functions into a single, more explicit one.
void ImGui::SetNavID(ImGuiID id, int nav_layer, int focus_scope_id)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.NavWindow);
IM_ASSERT(nav_layer == 0 || nav_layer == 1);
g.NavId = id;
g.NavFocusScopeId = focus_scope_id;
g.NavWindow->NavLastIds[nav_layer] = id;
}
void ImGui::SetNavIDWithRectRel(ImGuiID id, int nav_layer, const ImRect& rect_rel)
void ImGui::SetNavIDWithRectRel(ImGuiID id, int nav_layer, int focus_scope_id, const ImRect& rect_rel)
{
ImGuiContext& g = *GImGui;
SetNavID(id, nav_layer);
SetNavID(id, nav_layer, focus_scope_id);
g.NavWindow->NavRectRel[nav_layer] = rect_rel;
g.NavMousePosDirty = true;
g.NavDisableHighlight = false;
@ -2809,13 +2811,15 @@ void ImGui::SetFocusID(ImGuiID id, ImGuiWindow* window)
ImGuiContext& g = *GImGui;
IM_ASSERT(id != 0);
// Assume that SetFocusID() is called in the context where its NavLayer is the current layer, which is the case everywhere we call it.
// Assume that SetFocusID() is called in the context where its window->DC.NavLayerCurrent and window->DC.NavFocusScopeIdCurrent are valid.
// Note that window may be != g.CurrentWindow (e.g. SetFocusID call in InputTextEx for multi-line text)
const ImGuiNavLayer nav_layer = window->DC.NavLayerCurrent;
if (g.NavWindow != window)
g.NavInitRequest = false;
g.NavId = id;
g.NavWindow = window;
g.NavId = id;
g.NavLayer = nav_layer;
g.NavFocusScopeId = window->DC.NavFocusScopeIdCurrent;
window->NavLastIds[nav_layer] = id;
if (window->DC.LastItemId == id)
window->NavRectRel[nav_layer] = ImRect(window->DC.LastItemRect.Min - window->Pos, window->DC.LastItemRect.Max - window->Pos);
@ -5845,6 +5849,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
window->DC.NavLayerCurrentMask = (1 << ImGuiNavLayer_Main);
window->DC.NavLayerActiveMask = window->DC.NavLayerActiveMaskNext;
window->DC.NavLayerActiveMaskNext = 0x00;
window->DC.NavFocusScopeIdCurrent = 0;
window->DC.NavHideHighlightOneFrame = false;
window->DC.NavHasScroll = (window->ScrollMax.y > 0.0f);
@ -6047,6 +6052,7 @@ void ImGui::FocusWindow(ImGuiWindow* window)
g.NavMousePosDirty = true;
g.NavInitRequest = false;
g.NavId = window ? window->NavLastIds[0] : 0; // Restore NavId
g.NavFocusScopeId = 0;
g.NavIdIsAlive = false;
g.NavLayer = ImGuiNavLayer_Main;
//IMGUI_DEBUG_LOG("FocusWindow(\"%s\")\n", window ? window->Name : NULL);
@ -8039,21 +8045,22 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
#endif
if (new_best)
{
result->ID = id;
result->SelectScopeId = g.MultiSelectScopeId;
result->Window = window;
result->ID = id;
result->FocusScopeId = window->DC.NavFocusScopeIdCurrent;
result->RectRel = nav_bb_rel;
}
// Features like PageUp/PageDown need to maintain a separate score for the visible set of items.
const float VISIBLE_RATIO = 0.70f;
if ((g.NavMoveRequestFlags & ImGuiNavMoveFlags_AlsoScoreVisibleSet) && window->ClipRect.Overlaps(nav_bb))
if (ImClamp(nav_bb.Max.y, window->ClipRect.Min.y, window->ClipRect.Max.y) - ImClamp(nav_bb.Min.y, window->ClipRect.Min.y, window->ClipRect.Max.y) >= (nav_bb.Max.y - nav_bb.Min.y) * VISIBLE_RATIO)
if (NavScoreItem(&g.NavMoveResultLocalVisibleSet, nav_bb))
{
result = &g.NavMoveResultLocalVisibleSet;
result->ID = id;
result->SelectScopeId = g.MultiSelectScopeId;
result->Window = window;
result->ID = id;
result->FocusScopeId = window->DC.NavFocusScopeIdCurrent;
result->RectRel = nav_bb_rel;
}
}
@ -8063,6 +8070,7 @@ static void ImGui::NavProcessItem(ImGuiWindow* window, const ImRect& nav_bb, con
{
g.NavWindow = window; // Always refresh g.NavWindow, because some operations such as FocusItem() don't have a window.
g.NavLayer = window->DC.NavLayerCurrent;
g.NavFocusScopeId = window->DC.NavFocusScopeIdCurrent;
g.NavIdIsAlive = true;
g.NavIdTabCounter = window->DC.FocusCounterTabStop;
window->NavRectRel[window->DC.NavLayerCurrent] = nav_bb_rel; // Store item bounding box (relative to window position)
@ -8153,10 +8161,11 @@ static void NavRestoreLayer(ImGuiNavLayer layer)
g.NavLayer = layer;
if (layer == 0)
g.NavWindow = ImGui::NavRestoreLastChildNavWindow(g.NavWindow);
if (layer == 0 && g.NavWindow->NavLastIds[0] != 0)
ImGui::SetNavIDWithRectRel(g.NavWindow->NavLastIds[0], layer, g.NavWindow->NavRectRel[0]);
ImGuiWindow* window = g.NavWindow;
if (layer == 0 && window->NavLastIds[0] != 0)
ImGui::SetNavIDWithRectRel(window->NavLastIds[0], layer, 0, window->NavRectRel[0]);
else
ImGui::NavInitWindow(g.NavWindow, true);
ImGui::NavInitWindow(window, true);
}
static inline void ImGui::NavUpdateAnyRequestFlag()
@ -8179,7 +8188,7 @@ void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
//IMGUI_DEBUG_LOG("[Nav] NavInitWindow() init_for_nav=%d, window=\"%s\", layer=%d\n", init_for_nav, window->Name, g.NavLayer);
if (init_for_nav)
{
SetNavID(0, g.NavLayer);
SetNavID(0, g.NavLayer, 0);
g.NavInitRequest = true;
g.NavInitRequestFromMove = false;
g.NavInitResultId = 0;
@ -8189,6 +8198,7 @@ void ImGui::NavInitWindow(ImGuiWindow* window, bool force_reinit)
else
{
g.NavId = window->NavLastIds[0];
g.NavFocusScopeId = 0;
}
}
@ -8295,9 +8305,9 @@ static void ImGui::NavUpdate()
// Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
//IMGUI_DEBUG_LOG("[Nav] Apply NavInitRequest result: 0x%08X Layer %d in \"%s\"\n", g.NavInitResultId, g.NavLayer, g.NavWindow->Name);
if (g.NavInitRequestFromMove)
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, 0, g.NavInitResultRectRel);
else
SetNavID(g.NavInitResultId, g.NavLayer);
SetNavID(g.NavInitResultId, g.NavLayer, 0);
g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
}
g.NavInitRequest = false;
@ -8364,7 +8374,7 @@ static void ImGui::NavUpdate()
ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
IM_ASSERT(child_window->ChildId != 0);
FocusWindow(parent_window);
SetNavID(child_window->ChildId, 0);
SetNavID(child_window->ChildId, 0, 0);
// Reassigning with same value, we're being explicit here.
g.NavIdIsAlive = false; // -V1048
if (g.NavDisableMouseHover)
@ -8386,7 +8396,7 @@ static void ImGui::NavUpdate()
// Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
g.NavWindow->NavLastIds[0] = 0;
g.NavId = 0;
g.NavId = g.NavFocusScopeId = 0;
}
}
@ -8506,7 +8516,7 @@ static void ImGui::NavUpdate()
float pad = window->CalcFontSize() * 0.5f;
window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
g.NavId = 0;
g.NavId = g.NavFocusScopeId = 0;
}
g.NavMoveFromClampedRefRect = false;
}
@ -8586,9 +8596,10 @@ static void ImGui::NavUpdateMoveResult()
{
// Don't set NavJustMovedToId if just landed on the same spot (which may happen with ImGuiNavMoveFlags_AllowCurrentNavId)
g.NavJustMovedToId = result->ID;
g.NavJustMovedToMultiSelectScopeId = result->SelectScopeId;
g.NavJustMovedToFocusScopeId = result->FocusScopeId;
}
SetNavIDWithRectRel(result->ID, g.NavLayer, result->RectRel);
SetNavIDWithRectRel(result->ID, g.NavLayer, result->FocusScopeId, result->RectRel);
g.NavMoveFromClampedRefRect = false;
}